Based on the ground floor, the interior of Luis' apartment encompasses only two compact rooms. The main room serves as a living area, dining area and kitchen, while the second room, separated only by curtains, houses the apartment's bedroom. A second door next to the bedroom, presumably leading to the bathroom, is inaccessible. While modest in size, the apartment is considerably tidy and well furnished with tasteful decors.

The apartment provides the player with the usual amenities, including a bed in the bedroom to save games, a flatscreen television, and access to Luis' preset wardrobe; Internet access is not available in the safehouse. A "Residents Parking Only" parking space that can support up to two vehicles is also provided outside, however, it is placed in a spot where cars will constantly drive into the cars it holds.

Detailing

Apart the usual facilities, the apartment contains multiple detailing that paint a picture of Luis' personality:

Three military portraits of Luis' father are hung up around the apartment: One in the living area, another over the dining table, and the third picture in the bedroom.

Similarly, a photograph of Luis and his mother is hung over the dining table, next to one of his father's portraits.

A Higgins Helitours "Chopper Operator Certificate" with Luis' name is hung next to the entranceway into the bedroom.

A dumbbell set can be found at the corner of the bedroom, indicating Luis may have worked out.

A black gaming console is placed next to the apartment's entertainment center, bearing a "TOSHI" brand, implying Luis is interested in video games to some degree. The design of the console implies it to be a parody fusion of both the Xbox 360 and the PlayStation 3.

A miniature Brown Streak figure is placed on the entertainment center.

The apartment has substantial collections of magazines, movies and music CDs.

Trivia

The default music playing in Luis' apartment is always set to San Juan Sounds.

The stereo in the apartment cannot be turned off by shooting it.

On the shelf, there are many CDs, one of them featuring OG Loc from Grand Theft Auto: San Andreas.

On the bookcase in the living area, a magazine features Millie Perkins' character model.

The console next to the TV is not plugged in, even though the light on the front is on.

A calender in the kitchen marks the dates supposed to be the release date of the game for the PlayStation 3 and PC before it was delayed.

It is possible that Gay Tony bought the apartment for Luis before going into debt.

The apartment is one of a handful of locales in a GTA IV episodic game to receive very minimal changes in the exterior. Aside the addition of a parking space and the modification of the entrance into the apartment, the apartment is otherwise similar to that featured in GTA IV.

Due to an oversight error on the behalf of a level designer, there is a fire hydrant on the curb next to the parking bay, clearly breaking basic parking laws.

For an unknown reason (possibly designer oversight), the traffic flow on the street in front of the apartment goes through the parking bay, and may be blocked if a vehicle is stored there.

Luis' apartment is not there on GTA IV and TLAD, (DLC version only) it is a random apartment and the parking space is not there.

There is a video game console next to Luis' TV. If the player zoom in with a sniper rifle, they can see that it says TOSHI.

Sometimes at the start of a new game on the PC version, the television will be smashed and not working. Saving the game can return the television to its normal state.